Simplify the complex rational expression.
A. 
B. x - 1
C. -1
D. 
Answer: A
Mathematics
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Evaluate the algebraic expression for the given values of the variables.m ? n - 9, for m = 7, n = 8
A. 504 B. 47 C. 65 D. 7
Mathematics
Provide an appropriate response.Determine: 
Fill in the blank(s) with the appropriate word(s).
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Use technology to compute r, the correlation coefficient.The following are costs of advertising (in thousands of dollars) and the number of products sold (in thousands): 
A. -.0707 B. .7077 C. .2456 D. .2353
Mathematics
Use Cramer's rule to determine if the system is inconsistent system or contains dependent equations. x + z = 12x - 2y = -2 y + z = 4
A. system contains dependent equations B. system is inconsistent
Mathematics